it causes your tear ducts, your nasal cavity to open. probably nine times out of ten it's going to incapacitate someone long enough for you to apprehend them. >> but not so with this suspect. >> it almost seemed like the pepper spray aggravated him. >> bergen loses his shirt in the fray and then reaches for a chair and hurls it at officer shannon. >> the moment of the fight, didn't even feel getting hit with the chair. >> the brawl moves off-camera, in front of an adjacent row of lockers. >> when you see the lockers moving, that's me hitting him a second time. this time in the chest. it doesn't stop him. >> another officer joins the fight, and the four officers are able to subdue bergen. >> down on the the ground. down on the ground! >> we got him to the ground. as we're handcuffing him, he's yelling, kill me, kill me, just kill me. >> kill me! kill me! kill me. >> it was over. it was done. he knew he wasn't going any further. >> the pepper spray makes its way through the ventilation system, ultimately sending seven officers and a radio